نتایج جستجو برای: plates

تعداد نتایج: 36099  

Journal: :civil engineering infrastructures journal 0
amin ghannadiasl faculty of engineering, university of mohaghegh ardabili asadollah noorzad school of civil engineering, the university of tehran

this paper presents the bending analysis of annular plates by the indirect trefftz boundary approach. the formulation for thin and thick plates is based on the kirchhoff plate theory and the reissner plate theory. the governing equations are therefore a fourth-order boundary value problem and a sixth-order boundary value problem, respectively. the trefftz method employs the complete set of solu...

Journal: :international journal of advanced design and manufacturing technology 0
mohamadmehdi najafzadeh payman shoghi

in this research three-dimensional free vibration analysis of functionally graded circular plate with various boundary conditions is achieved. a semi-analytical method, which makes use of the state space method and the one-dimensional differential quadrature method, is used to obtain the vibration frequencies and dynamic responses of circular plates. numerical results are given to demonstrate t...

Journal: :Current Biology 2010
Nigel Williams

garden asparagus is thought originally to be native in eastern Europe or western Asia, perhaps in or near the Caucasus, although it is widely naturalised inland and on the coast.” But wild asparagus is becoming increasingly rare. It is found only on the coasts of northern Spain, northwestern France, Belgium, the Netherlands, the UK and Ireland. And some of the known populations comprise as few ...

2010
Victor Birman

Plates and shells represent principal elements of aerospace structures, including fuselages of planes and missiles, control surfaces, bulkheads, helicopter blades, and others. The multiple applications, shapes, and materials found in plate and shell structures dictate the necessity of a comprehensive approach to their analysis reflected in relevant theories and methodologies. Various aspects of...

2009
Roberto Ballarini Taichiro Okazaki Arturo Schultz

The collapse resulted in the media’s search for immediate answers to the following two questions; why did the bridge collapse and who is to blame? Speculative answers to the first question were proposed by the “Average Joe” and structural engineering experts alike, and involved the usual suspects; the growth from microscopic to catastrophic lengths of undetected cyclic load-induced fatigue crac...

Journal: :Science 2002
Bartosz A Grzybowski George M Whitesides

An object spinning at the surface of a liquid creates a chiral vortex. If the spinning object is itself chiral, its shape modifies the characteristics of the vortex; interactions between that vortex and other vortices then depend on the chirality of the objects that produce them. This paper describes the aggregation of millimeter-sized, chiral magnetized plates floating at a liquid-air interfac...

2006
J. ERIC LINE

We developed a biphasic method for recovery and enumeration of campylobacters. The biphasic system was composed of 96-well microtiter plates containing Campy–Line agar prepared 2¥ for all ingredients except for 1¥ agar (0.1 mL per well). Samples were prepared in either twofold or fivefold dilution series across separate 96-well plates and directly transferred (0.1 mL) to the agar-containing mic...

2017
Luiz Carlos Almeida da Silva João Mendonça de Lima Heck Marcelo Teodoro Ezequiel Guerra

OBJECTIVE To evaluate the clinical results of surgical treatment of intraarticular fractures of the calcaneus, comparing the use of calcaneal plate and flat plate. METHODS This was a retrospective study assessing the postoperative results of 25 patients between 2013 and 2015. Patients undergoing surgical treatment of intraarticular fractures of the calcaneus without concomitant surgical lesio...

Journal: :Science 2002
Clinton P Conrad Carolina Lithgow-Bertelloni

The gravitational pull of subducted slabs is thought to drive the motions of Earth's tectonic plates, but the coupling between slabs and plates is not well established. If a slab is mechanically attached to a subducting plate, it can exert a direct pull on the plate. Alternatively, a detached slab may drive a plate by exciting flow in the mantle that exerts a shear traction on the base of the p...

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